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authorMichele Calgaro <michele.calgaro@yahoo.it>2024-10-03 17:43:38 +0900
committerMichele Calgaro <michele.calgaro@yahoo.it>2024-10-03 17:43:38 +0900
commit6964feed838dec70e7743ea90b390e4ae706d3c9 (patch)
tree6faf8862c19e31a988e9b5a43485a9f23b89d4a8 /doc/html/grapher-nsplugin-example.html
parent81288cfcb6a543d96a1ee4bf1d7d3c26231f517f (diff)
downloadtqt3-6964feed838dec70e7743ea90b390e4ae706d3c9.tar.gz
tqt3-6964feed838dec70e7743ea90b390e4ae706d3c9.zip
Remove obsolete Netscape plugin and its classes
Signed-off-by: Michele Calgaro <michele.calgaro@yahoo.it>
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+++ /dev/null
@@ -1,704 +0,0 @@
-<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
-<!-- /home/espenr/tmp/qt-3.3.8-espenr-2499/qt-x11-free-3.3.8/extensions/nsplugin/examples/grapher/grapher.doc:1 -->
-<html>
-<head>
-<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
-<title>Grapher Plugin</title>
-<style type="text/css"><!--
-fn { margin-left: 1cm; text-indent: -1cm; }
-a:link { color: #004faf; text-decoration: none }
-a:visited { color: #672967; text-decoration: none }
-body { background: #ffffff; color: black; }
---></style>
-</head>
-<body>
-
-<table border="0" cellpadding="0" cellspacing="0" width="100%">
-<tr bgcolor="#E5E5E5">
-<td valign=center>
- <a href="index.html">
-<font color="#004faf">Home</font></a>
- | <a href="classes.html">
-<font color="#004faf">All&nbsp;Classes</font></a>
- | <a href="mainclasses.html">
-<font color="#004faf">Main&nbsp;Classes</font></a>
- | <a href="annotated.html">
-<font color="#004faf">Annotated</font></a>
- | <a href="groups.html">
-<font color="#004faf">Grouped&nbsp;Classes</font></a>
- | <a href="functions.html">
-<font color="#004faf">Functions</font></a>
-</td>
-<td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>Grapher Plugin</h1>
-
-
-
-<p> This example graphs data from a simple text file. It
-demonstrates the use of the <a href="tqnpinstance.html#writeReady">TQNPInstance::writeReady</a>()
-and <a href="tqnpinstance.html#write">TQNPInstance::write</a>() functions.
-<p> To build the example, you must first build the
-<a href=nsplugin.html>TQt Netscape Plugin Extension</a> library.
-Then type <tt>make</tt> in <tt>extensions/nsplugin/examples/grapher/</tt>
-and copy the resulting <tt>grapher.so</tt> or <tt>npgrapher.dll</tt>
-to the Plugins directory of your WWW browser.
-<p> <EMBED ALIGN=LEFT WIDTH=49% HEIGHT=300 SRC=graph.g1n
-graphstyle=pie fontfamily=times fontsize=18>
-<p> The text file it accepts as input has a title line, then
-a sequence of lines with a number, then a string. The
-plugin displays a pie chart of the numbers, each segment
-labelled by the associated string. The user can select
-a bar chart view of the same data by selecting from the
-menu that appears when they point at the plugin.
-<p> The HTML tag used to embed the graph is:
-<small>
-<pre>
- &lt;EMBED
- SRC=graph.g1n
- ALIGN=LEFT
- WIDTH=49% HEIGHT=300
- graphstyle=pie fontfamily=times
- fontsize=18&gt;
-</pre><p> </small>
-Note that some HTML arguments (which we have capitalized here)
-are interpreted by the browser, while others are used by the
-plugin.
-<p> <br clear>
-With the simplicity and cross-platform nature of TQt-based plugins,
-pages like <a href="http://www.netcraft.com/survey/">Netcraft's
-Server Graphs</a> can be provided much more efficiently for both
-the service provider and consumer. Data need not be converted
-to an image at the server.
-<p> <br clear>
-<hr>
-Implementation:
-<p> <pre>// Include TQt Netscape Plugin classes.
-#include "tqnp.h"
-
-// Include other TQt classes.
-#include &lt;<a href="tqpainter-h.html">tqpainter.h</a>&gt;
-#include &lt;<a href="tqtextstream-h.html">tqtextstream.h</a>&gt;
-#include &lt;<a href="tqbuffer-h.html">tqbuffer.h</a>&gt;
-#include &lt;<a href="tqpixmap-h.html">tqpixmap.h</a>&gt;
-#include &lt;<a href="tqmenubar-h.html">tqmenubar.h</a>&gt;
-#include &lt;<a href="tqpushbutton-h.html">tqpushbutton.h</a>&gt;
-#include &lt;<a href="tqptrlist-h.html">tqptrlist.h</a>&gt;
-#include &lt;<a href="tqmessagebox-h.html">tqmessagebox.h</a>&gt;
-
-// Include some C library functions.
-#include &lt;math.h&gt;
-#include &lt;stdlib.h&gt;
-
-#ifndef M_PI // Some math.h don't include this.
-#define M_PI 3.14159265358979323846264338327950288
-#endif
-
-
-
-//
-// GraphModel is a simple abstract class that describes
-// a table of numeric and text data.
-//
-
-class GraphModel {
-public:
- enum ColType { Numeric, Label };
-
- union Datum {
- double dbl;
- <a href="tqstring.html">TQString</a>* str;
- };
-
- virtual TQPtrList&lt;Datum&gt;&amp; graphData()=0;
- virtual ColType colType(int col) const=0;
- virtual int nCols() const=0;
-};
-
-
-//
-// Graph is a widget subclass that displays a GraphModel.
-// Since the widget is a TQNPWidget, it can be used as a plugin window,
-// returned by Grapher::newWindow() below.
-//
-
-class Graph : public <a href="tqnpwidget.html">TQNPWidget</a> {
- <a href="metaobjects.html#TQ_OBJECT">TQ_OBJECT</a>
-public:
- // Constructs a Graph to display a GraphModel
- //
- Graph(GraphModel&amp;);
- ~Graph();
-
- // Two styles are available - Pie and Bar graph
- //
- enum Style { Pie, Bar };
- static const char* styleName[];
- void setStyle(Style);
- void setStyle(const char*);
-
- // Timer event processing rotates the pie graph
- //
- void timerEvent(TQTimerEvent*);
-
- // These functions are provided by TQNPWidget - we override
- // them to hide and show the plugin menubar.
- //
- void enterInstance();
- void leaveInstance();
-
- // Paint the graph...
- //
- void paintEvent(TQPaintEvent*);
- //
- // ... as either a "Loading" message, a Bar graph, a Pie graph,
- // or an error message.
- //
- void paintWait(TQPaintEvent*);
- void paintBar(TQPaintEvent*);
- void paintPie(TQPaintEvent*);
- void paintError(const char*);
-
-signals:
- // Signals emitted when the Help menus are selected.
- void aboutPlugin();
- void aboutData();
-
-private:
- GraphModel&amp; model;
- <a href="tqmenubar.html">TQMenuBar</a> *menubar;
- Style style;
- <a href="tqpopupmenu.html">TQPopupMenu</a>* stylemenu;
- int pieRotationTimer;
- int pieRotation;
- <a href="tqpixmap.html">TQPixmap</a> pm;
-
-private slots:
- void setStyleFromMenu(int id);
-};
-
-
-<a name="f564"></a>Graph::Graph( GraphModel&amp; mdl ) :
- model(mdl),
- <a href="tqwidget.html#style">style</a>(Bar),
- pieRotationTimer(0),
- pieRotation(0)
-{
- // Create a menubar for the widget
- //
- menubar = new <a href="tqmenubar.html">TQMenuBar</a>( this );
- stylemenu = new <a href="tqpopupmenu.html">TQPopupMenu</a>;
-<a name="x2768"></a> stylemenu-&gt;<a href="tqpopupmenu.html#setCheckable">setCheckable</a>(TRUE);
- for ( Style s = Pie; styleName[s]; s = Style(s+1)) {
- stylemenu-&gt;<a href="tqmenudata.html#insertItem">insertItem</a>(styleName[s], s+100);
- }
-<a name="x2767"></a> <a href="tqobject.html#connect">connect</a>(stylemenu, TQ_SIGNAL(<a href="tqpopupmenu.html#activated">activated</a>(int)),
- this, TQ_SLOT(setStyleFromMenu(int)));
- <a href="tqwidget.html#setStyle">setStyle</a>(Pie);
-
- menubar-&gt;<a href="tqmenudata.html#insertItem">insertItem</a>("Style", stylemenu);
- menubar-&gt;<a href="tqmenudata.html#insertSeparator">insertSeparator</a>();
-
- <a href="tqpopupmenu.html">TQPopupMenu</a>* help = new <a href="tqpopupmenu.html">TQPopupMenu</a>;
- help-&gt;<a href="tqmenudata.html#insertItem">insertItem</a>( "About plugin...", this, TQ_SIGNAL(aboutPlugin()) );
- help-&gt;<a href="tqmenudata.html#insertItem">insertItem</a>( "About data...", this, TQ_SIGNAL(aboutData()) );
- menubar-&gt;<a href="tqmenudata.html#insertItem">insertItem</a>("Help", help);
-<a name="x2745"></a> menubar-&gt;<a href="tqmenubar.html#hide">hide</a>();
-}
-
-Graph::~Graph()
-{
-}
-
-<a name="x2778"></a>void Graph::<a href="tqwidget.html#setStyle">setStyle</a>(Style s)
-{
- if (style != s) {
- if (pieRotationTimer)
- <a href="tqobject.html#killTimer">killTimer</a>(pieRotationTimer);
-<a name="x2749"></a> stylemenu-&gt;<a href="tqmenudata.html#setItemChecked">setItemChecked</a>(100+style, FALSE);
- style = s;
- if ( style == Pie )
- pieRotationTimer = <a href="tqobject.html#startTimer">startTimer</a>( 80 );
- else
- pieRotationTimer = 0;
- stylemenu-&gt;<a href="tqmenudata.html#setItemChecked">setItemChecked</a>(100+style, TRUE);
- <a href="tqwidget.html#update">update</a>();
- }
-}
-
-<a name="x2755"></a>void Graph::<a href="tqobject.html#timerEvent">timerEvent</a>(TQTimerEvent*)
-{
- pieRotation = ( pieRotation + 6 ) % 360; repaint(FALSE);
-}
-
-void Graph::<a href="tqwidget.html#setStyle">setStyle</a>(const char* stext)
-{
- for ( Style s = Pie; styleName[s]; s = Style(s+1) ) {
- if ( <a href="tqcstring.html#qstricmp">tqstricmp</a>(stext,styleName[s])==0 ) {
- <a href="tqwidget.html#setStyle">setStyle</a>(s);
- return;
- }
- }
-}
-
-<a name="x2753"></a>void Graph::<a href="tqnpwidget.html#enterInstance">enterInstance</a>()
-{
-<a name="x2746"></a> menubar-&gt;<a href="tqmenubar.html#show">show</a>();
-}
-
-<a name="x2754"></a>void Graph::<a href="tqnpwidget.html#leaveInstance">leaveInstance</a>()
-{
- menubar-&gt;<a href="tqmenubar.html#hide">hide</a>();
-}
-
-void <a name="f565"></a>Graph::paintError(const char* e)
-{
- <a href="tqpainter.html">TQPainter</a> p(this);
- int w = <a href="tqwidget.html#width">width</a>();
-<a name="x2760"></a> p.<a href="tqpainter.html#drawText">drawText</a>(w/8, 0, w-w/4, height(), AlignCenter|WordBreak, e);
-}
-
-void <a name="f566"></a>Graph::paintBar(TQPaintEvent* event)
-{
- if ( model.colType(0) != GraphModel::Numeric ) {
- paintError("First column not numeric, cannot draw bar graph\n");
- return;
- }
-
- <a href="tqptrlist.html">TQPtrList</a>&lt;GraphModel::Datum&gt;&amp; data = model.graphData();
-
- double max = 0.0;
-
-<a name="x2772"></a> for (GraphModel::Datum* rowdata = data.<a href="tqptrlist.html#first">first</a>();
-<a name="x2773"></a> rowdata; rowdata = data.<a href="tqptrlist.html#next">next</a>())
- {
- if (rowdata[0].dbl &gt; max) max = rowdata[0].dbl;
- }
-
- const uint w = <a href="tqwidget.html#width">width</a>();
- const uint h = <a href="tqwidget.html#height">height</a>();
-
- <a href="tqpainter.html">TQPainter</a> p(this);
-
-<a name="x2762"></a> p.<a href="tqpainter.html#setClipRect">setClipRect</a>(event-&gt;rect());
-
-<a name="x2771"></a> if ( w &gt; data.<a href="tqptrlist.html#count">count</a>() ) {
- // More pixels than data
- int x = 0;
- int i = 0;
- <a href="tqfontmetrics.html">TQFontMetrics</a> fm=<a href="tqwidget.html#fontMetrics">fontMetrics</a>();
-<a name="x2741"></a> int fh = fm.<a href="tqfontmetrics.html#height">height</a>();
-
- for (GraphModel::Datum* rowdata = data.<a href="tqptrlist.html#first">first</a>();
- rowdata; rowdata = data.<a href="tqptrlist.html#next">next</a>())
- {
- <a href="tqcolor.html">TQColor</a> c;
-<a name="x2740"></a> c.<a href="tqcolor.html#setHsv">setHsv</a>( (i * 255)/data.<a href="tqptrlist.html#count">count</a>(), 255, 255 );// rainbow effect
- p.<a href="tqpainter.html#setBrush">setBrush</a>(c);
- int bw = (w-w/4-x)/(data.<a href="tqptrlist.html#count">count</a>()-i);
- int bh = int((h-h/4-1)*rowdata[0].dbl/max);
- p.<a href="tqpainter.html#drawRect">drawRect</a>( w/8+x, h-h/8-1-bh, bw, bh );
-
- i++;
- x+=bw;
- }
- } else {
- // More data than pixels
- int x = 0;
- int i = 0;
- double av = 0.0;
- int n = 0;
- for (GraphModel::Datum* rowdata = data.<a href="tqptrlist.html#first">first</a>(); rowdata;
- rowdata = data.<a href="tqptrlist.html#next">next</a>())
- {
- int bx = i*w/data.<a href="tqptrlist.html#count">count</a>();
-
- if (bx &gt; x) {
- <a href="tqcolor.html">TQColor</a> c;
- c.<a href="tqcolor.html#setHsv">setHsv</a>( (x * 255)/w, 255, 255 );// rainbow effect
- p.<a href="tqpainter.html#setPen">setPen</a>(c);
- int bh = int(h*av/n/max);
-
- p.<a href="tqpainter.html#drawLine">drawLine</a>(x,h-1,x,h-bh);
-
- av = 0.0;
- n = 0;
- x = bx;
- }
-
- av += rowdata[0].dbl;
- n++;
-
- i++;
- }
- }
-}
-
-void <a name="f567"></a>Graph::paintPie(TQPaintEvent* event)
-{
- if ( model.colType(0) != GraphModel::Numeric ) {
- paintError("First column not numeric, cannot draw pie graph\n");
- return;
- }
-
- <a href="tqptrlist.html">TQPtrList</a>&lt;GraphModel::Datum&gt;&amp; data = model.graphData();
-
- double total = 0.0;
-
- GraphModel::Datum* rowdata;
-
- for (rowdata = data.<a href="tqptrlist.html#first">first</a>();
- rowdata; rowdata = data.<a href="tqptrlist.html#next">next</a>())
- {
- total += rowdata[0].dbl;
- }
-
- // Only use first column for pie chart
- if ( !total ) return;
-
- int apos = (pieRotation-90)*16;
-
- const int w = <a href="tqwidget.html#width">width</a>();
- const int h = <a href="tqwidget.html#height">height</a>();
-
- const int xd = w - w/5;
- const int yd = h - h/5;
-
-<a name="x2766"></a> pm.<a href="tqpixmap.html#resize">resize</a>(<a href="tqwidget.html#width">width</a>(),height());
-<a name="x2765"></a> pm.<a href="tqpixmap.html#fill">fill</a>(<a href="tqwidget.html#backgroundColor">backgroundColor</a>());
- <a href="tqpainter.html">TQPainter</a> p(&amp;pm);
-<a name="x2763"></a> p.<a href="tqpainter.html#setFont">setFont</a>(<a href="tqwidget.html#font">font</a>());
-
- p.<a href="tqpainter.html#setClipRect">setClipRect</a>(event-&gt;rect());
-
- int i = 0;
-
- for (rowdata = data.<a href="tqptrlist.html#first">first</a>();
- rowdata; rowdata = data.<a href="tqptrlist.html#next">next</a>())
- {
- <a href="tqcolor.html">TQColor</a> c;
-
- c.<a href="tqcolor.html#setHsv">setHsv</a>( ( i * 255)/data.<a href="tqptrlist.html#count">count</a>(), 255, 255 );// rainbow effect
- p.<a href="tqpainter.html#setBrush">setBrush</a>( c ); // solid fill with color c
-
- int a = int(( rowdata[0].dbl * 360.0 ) / total * 16.0 + 0.5);
-<a name="x2757"></a> p.<a href="tqpainter.html#drawPie">drawPie</a>( w/10, h/10, xd, yd, -apos, -a );
- apos += a;
- i++;
- }
-
- if (model.colType(1) == GraphModel::Label) {
- double apos = (pieRotation-90)*M_PI/180;
-
- for (rowdata = data.<a href="tqptrlist.html#first">first</a>();
- rowdata; rowdata = data.<a href="tqptrlist.html#next">next</a>())
- {
- double a = rowdata[0].dbl * 360 / total * M_PI / 180;
- int x = int(cos(apos+a/2)*w*5/16 + w/2 + 0.5);
- int y = int(sin(apos+a/2)*h*5/16 + h/2 + 0.5);
-
- // ### This causes a crash, so comment out for now
- /*p.<a href="tqpainter.html#drawText">drawText</a>(x-w/8, y-h/8, w/4, h/4,
- WordBreak|AlignCenter,
- *rowdata[1].str);*/
- apos += a;
- }
- }
-
- <a href="tqpainter.html">TQPainter</a> p2(this);
- p2.<a href="tqpainter.html#setClipRect">setClipRect</a>(event-&gt;rect());
-<a name="x2758"></a> p2.<a href="tqpainter.html#drawPixmap">drawPixmap</a>(0,0,pm);
-}
-
-void <a name="f568"></a>Graph::paintWait(TQPaintEvent*)
-{
- <a href="tqpainter.html">TQPainter</a> p(this);
- p.<a href="tqpainter.html#drawText">drawText</a>(rect(), AlignCenter, "Loading...");
-}
-
-void Graph::<a href="tqwidget.html#paintEvent">paintEvent</a>(TQPaintEvent* event)
-{
- if (!model.nCols()) {
- paintWait(event);
- } else {
- switch (style) {
- case Pie:
- paintPie(event);
- break;
- case Bar:
- paintBar(event);
- break;
- }
- }
-}
-
-void <a name="f569"></a>Graph::setStyleFromMenu(int id)
-{
- setStyle(Style(id-100));
-}
-
-const char* Graph::styleName[] = { "Pie", "Bar", 0 };
-
-
-//
-// Grapher is a subclass of TQNPInstance, and so it can be returned
-// by GrapherPlugin::newInstance(). A TQNPInstance represents the
-// plugin, distinctly from the plugin window.
-//
-// Grapher is also a GraphModel, because it loads graph data from
-// the net. When Grapher creates a window in newWindow(), it creates
-// a Graph widget to display the GraphModel that is the Grapher itself.
-//
-
-class Grapher : public <a href="tqnpinstance.html">TQNPInstance</a>, GraphModel {
- TQ_OBJECT
-public:
- // Create a Grapher - all Grapher plugins are created
- // by one GrapherPlugin object.
- //
- Grapher();
- ~Grapher();
-
- // We override this TQNPInstance function to create our
- // own subclass of TQNPWidget, a Graph widget.
- //
- <a href="tqnpwidget.html">TQNPWidget</a>* newWindow();
-
- // We override this TQNPInstance function to process the
- // incoming graph data.
- //
- int write(TQNPStream* /*str*/, int /*offset*/, int len, void* buffer);
-
-private:
- // Grapher is a GraphModel, so it implements the pure virtual
- // functions of that class.
- //
- <a href="tqptrlist.html">TQPtrList</a>&lt;Datum&gt;&amp; graphData();
- ColType colType(int col) const;
- int nCols() const;
-
- void consumeLine();
- <a href="tqptrlist.html">TQPtrList</a>&lt;Datum&gt; data;
- <a href="tqbuffer.html">TQBuffer</a> line;
- int ncols;
- ColType *coltype;
-
-private slots:
- // Slots that are connected to the Graph menu items.
- //
- void aboutPlugin();
- void aboutData();
-};
-
-<a name="f570"></a>Grapher::Grapher()
-{
-<a name="x2769"></a> data.<a href="tqptrcollection.html#setAutoDelete">setAutoDelete</a>(TRUE);
- ncols = 0;
-<a name="x2743"></a> line.<a href="tqiodevice.html#open">open</a>(IO_WriteOnly|IO_Truncate);
-}
-
-Grapher::~Grapher()
-{
-}
-
-TQPtrList&lt;GraphModel::Datum&gt;&amp; <a name="f571"></a>Grapher::graphData()
-{
- return data;
-}
-
-GraphModel::ColType <a name="f572"></a>Grapher::colType(int col) const
-{
- return coltype[col];
-}
-
-int <a name="f573"></a>Grapher::nCols() const
-{
- return ncols;
-}
-
-
-<a name="x2751"></a>TQNPWidget* Grapher::<a href="tqnpinstance.html#newWindow">newWindow</a>()
-{
- // Create a Graph - our subclass of TQNPWidget.
- Graph *graph = new Graph(*this);
-
- // Look at the arguments from the EMBED tag.
- // GRAPHSTYLE chooses pie or bar
- // FONTFAMILY and FONTSIZE choose the font
- //
- const char* style = <a href="tqnpinstance.html#arg">arg</a>("GRAPHSTYLE");
- if ( style ) graph-&gt;<a href="tqwidget.html#setStyle">setStyle</a>(style);
-
- const char* fontfamily = <a href="tqnpinstance.html#arg">arg</a>("FONTFAMILY");
- const char* fontsize = <a href="tqnpinstance.html#arg">arg</a>("FONTSIZE");
-<a name="x2775"></a> int ptsize = fontsize ? atoi(fontsize) : graph-&gt;<a href="tqwidget.html#font">font</a>().pointSize();
- if (fontfamily) graph-&gt;<a href="tqwidget.html#setFont">setFont</a>(TQFont(fontfamily, ptsize));
-
- <a href="tqobject.html#connect">connect</a>(graph, TQ_SIGNAL(aboutPlugin()), this, TQ_SLOT(aboutPlugin()));
- <a href="tqobject.html#connect">connect</a>(graph, TQ_SIGNAL(aboutData()), this, TQ_SLOT(aboutData()));
-
- return graph;
-}
-
-void <a name="f574"></a>Grapher::consumeLine()
-{
-<a name="x2742"></a> line.<a href="tqiodevice.html#close">close</a>();
- line.<a href="tqiodevice.html#open">open</a>(IO_ReadOnly);
-
- <a href="tqtextstream.html">TQTextStream</a> ts( &amp;line );
-
- if (ncols == 0 ) {
- ncols=0;
- <a href="tqptrlist.html">TQPtrList</a>&lt;ColType&gt; typelist;
- typelist.<a href="tqptrcollection.html#setAutoDelete">setAutoDelete</a>(TRUE);
- do {
- <a href="tqstring.html">TQString</a> typestr;
- ts &gt;&gt; typestr &gt;&gt; ws;
- ColType* t = 0;
- if ( typestr == "num" ) {
- t = new ColType(Numeric);
- } else if ( typestr == "label" ) {
- t = new ColType(Label);
- }
-<a name="x2770"></a> if (t) typelist.<a href="tqptrlist.html#append">append</a>(t);
-<a name="x2774"></a> } while (!ts.<a href="tqtextstream.html#atEnd">atEnd</a>());
- coltype = new ColType[ncols];
- for (ColType* t = typelist.<a href="tqptrlist.html#first">first</a>(); t; t = typelist.<a href="tqptrlist.html#next">next</a>()) {
- coltype[ncols++] = *t;
- }
- } else {
- int col=0;
- Datum *rowdata = new Datum[ncols];
- while ( col &lt; ncols &amp;&amp; !ts.<a href="tqtextstream.html#atEnd">atEnd</a>() ) {
- switch (coltype[col]) {
- case Numeric: {
- double value;
- ts &gt;&gt; value &gt;&gt; ws;
- rowdata[col].dbl = value;
- break;
- }
- case Label: {
- <a href="tqstring.html">TQString</a>* value = new <a href="tqstring.html">TQString</a>;
- ts &gt;&gt; *value &gt;&gt; ws;
- rowdata[col].str = value;
- break;
- }
- }
- col++;
- }
-
- data.<a href="tqptrlist.html#append">append</a>(rowdata);
- }
-
- line.<a href="tqiodevice.html#close">close</a>();
- line.<a href="tqiodevice.html#open">open</a>(IO_WriteOnly|IO_Truncate);
-}
-
-<a name="x2752"></a>int Grapher::<a href="tqnpinstance.html#write">write</a>(TQNPStream* /*str*/, int /*offset*/, int len, void* buffer)
-{
- // The browser calls this function when data is available on one
- // of the streams the plugin has requested. Since we are only
- // processing one stream - the URL in the SRC argument of the EMBED
- // tag, we assume the TQNPStream is that one. Also, since we do not
- // override TQNPInstance::writeReady(), we must accepts ALL the data
- // that is sent to this function.
- //
- char* txt = (char*)buffer;
- for (int i=0; i&lt;len; i++) {
- char ch = txt[i];
- switch ( ch ) {
- case '\n':
- consumeLine();
- break;
- case '\r': // ignore;
- break;
- default:
-<a name="x2744"></a> line.<a href="tqiodevice.html#putch">putch</a>(ch);
- }
- }
- if ( <a href="tqnpinstance.html#widget">widget</a>() )
- <a href="tqnpinstance.html#widget">widget</a>()-&gt;update();
-
- return len;
-}
-
-void <a name="f575"></a>Grapher::aboutPlugin()
-{
- <a href="tqnpinstance.html#getURL">getURL</a>( "http://doc.trolltech.com/netscape-plugin.html", "_blank" );
-}
-
-void <a name="f576"></a>Grapher::aboutData()
-{
- const char* page = <a href="tqnpinstance.html#arg">arg</a>("DATAPAGE");
- if (page)
- <a href="tqnpinstance.html#getURL">getURL</a>( page, "_blank" );
- else
-<a name="x2750"></a> TQMessageBox::<a href="tqmessagebox.html#message">message</a>("Help", "No help for this data");
-}
-
-
-//
-// GrapherPlugin is the start of everything. It is a TQNPlugin subclass,
-// and it is responsible for describing the plugin to the browser, and
-// creating instances of the plugin when it appears in web page.
-//
-
-class GrapherPlugin : public <a href="tqnplugin.html">TQNPlugin</a> {
-public:
- GrapherPlugin()
- {
- }
-
- <a href="tqnpinstance.html">TQNPInstance</a>* newInstance()
- {
- // Make a new Grapher, our subclass of TQNPInstance.
- return new Grapher;
- }
-
- const char* getMIMEDescription() const
- {
- // Describe the MIME types which this plugin can
- // process. Just the concocted "application/x-graphable"
- // type, with the "g1n" filename extension.
- //
- return "application/x-graphable:g1n:Graphable ASCII numeric data";
- }
-
- const char * getPluginNameString() const
- {
- // The name of the plugin. This is the title string used in
- // the "About Plugins" page of the browser.
- //
- return "TQt-based Graph Plugin";
- }
-
- const char * getPluginDescriptionString() const
- {
- // A longer description of the plugin.
- //
- return "A TQt-based LiveConnected plug-in that graphs numeric data";
- }
-
-};
-
-//
-// Finally, we provide the implementation of TQNPlugin::create(), to
-// provide our subclass of TQNPlugin.
-//
-
-TQNPlugin* TQNPlugin::create()
-{
- return new GrapherPlugin;
-}
-
-#include "grapher.moc"
-</pre>
-
-<p>See also <a href="nsplugin-examples.html">Netscape Plugin Examples</a>.
-
-<!-- eof -->
-<p><address><hr><div align=center>
-<table width=100% cellspacing=0 border=0><tr>
-<td>Copyright &copy; 2007
-<a href="troll.html">Trolltech</a><td align=center><a href="trademarks.html">Trademarks</a>
-<td align=right><div align=right>TQt 3.3.8</div>
-</table></div></address></body>
-</html>